Psychosocial working conditions, trajectories of disability, and the mediating role of cognitive decline and chronic diseases: A population-based cohort study

Physical and mental demands of work associated with dementia risk in later life

BACKGROUND

Work occupies a significant portion of adult life, and both cognitive stimulation and physical activity have been suggested as factors that may lower dementia risk in later life.

OBJECTIVES

To examine the association between mental and physical demands at work and the risk of dementia.

DESIGN

A cohort study.

SETTING

Seven selected districts in Taiwan, covering both urban and rural areas.

PARTICIPANTS

4,083 community-dwelling healthy adults aged 55 and older from the Healthy Aging Longitudinal Study.

MEASUREMENTS

A job matrix of work conditions by occupation was generated using data from a representative national survey. Mental demands were assessed by job control and psychological demands from the Job Content Questionnaire, as well as skill levels. Physical demands were assessed using a 4-point Likert scale and dichotomized into high and low levels. Dementia diagnoses were identified based on physician diagnosis registered in the National Health Insurance database.

RESULTS

Over a follow-up period of 6.2 years, 513 participants were diagnosed with dementia. After adjusting for confounding factors in cox regression models, high (vs. low) job control, high -skilled jobs (vs. low), and high physical demands (vs. low) were associated with a reduced future risk of dementia. Psychological demands were not associated with dementia risk.

CONCLUSIONS

Greater utilization of job skills and engagement in physically demanding activities at work may help mitigate the risk of developing dementia. The effects of different dimensions of psychological demands on cognitive health warrant further investigation.

Functioning performance trajectory and its associated factors for people with disability-A 4-year national study

BACKGROUND

Humans experience functioning difficulties in daily life, which are dependent on the interaction between health conditions and barriers in life. In general, functioning is an umbrella term and a dynamic concept. Thus, identifying the factors associated with long-term functioning would be beneficial to the development of specific health policies and quality of life for people with disabilities. However, previous studies are mainly cross-sectional ones, and fewer studies focus on the long-term effect of changes in functioning for people with disabilities. The current study aims to examine functioning performance trajectory and the associated factors for people with disabilities.

METHODS

A longitudinal study was conducted over four years, for which data were retrieved from the National Disability Eligibility Determination System in Taiwan. The assessment methods used are as follows: activity and participation rated using the WHO Disability Assessment Schedule 2.0 (with high scores indicating increased limitations in daily life), personal factors, body function and structure, and environmental factors. Statistical analysis was conducted using latent growth curve models.

RESULTS

We recruited 3,720 people with disabilities. We found that females, people with moderate and severe disability level, and those who were employed were associated with rapid increases in functioning scores every year. Conversely, improved social participation was linked to relatively slow increases in functioning scores regardless of the type of disability (p <.05).

CONCLUSIONS

Determining the factors associated with long-term functioning can serve as a reference for the development of health policies and improvement of quality of life for people with disabilities.

A study on cognitive trajectory changes and predictive factors in middle-aged and older adults individuals with dual sensory impairment based on the health social determinants model

Aim

This study aims to explore the cognitive trajectory changes in middle-aged and older adults individuals with dual sensory impairment (simultaneous visual and hearing impairment) and to identify the predictors of different trajectory changes.

Methods

Based on the longitudinal data from the China Health and Retirement Longitudinal Study (CHARLS) from 2013 to 2020, data from 2,369 middle-aged and older adults individuals with dual sensory impairment were selected. A latent variable growth mixture model was constructed to analyze the cognitive function development trajectories in this population and to identify their predictive factors.

Results

The cognitive function development trajectories in the middle-aged and older adults population can be categorized into three types: high cognitive level stable group, low cognitive level slowly declining group, and moderate cognitive level rapidly declining group. Logistic regression analysis showed that age (OR 30.544; 95% CI 9.35-99.754; p < 0.001), sleep duration (OR 0.559; 95% CI 0.343-0.909; p < 0.005), education (OR 0.009; 95% CI 0.003-0.025; p < 0.001), marital status (OR 2.122; 95% CI 1.457-3.090; p < 0.001), social participation (OR 0.499; 95% CI 0.379-0.658; p < 0.001), place of residence (OR 1.471; 95% CI 1.089-1.988; p < 0.001), and medical insurance (OR 0.353; 95% CI 0.169-0.736; p < 0.005) are predictive factors for cognitive function trajectories in this population.

Conclusion

There is group heterogeneity in the cognitive function development trajectories among middle-aged and older adults individuals with dual sensory impairment. Factors such as less than 4 h of nighttime sleep, low social participation, alcohol consumption, and lack of medical insurance are modifiable risk factors for cognitive decline in this population. Preventive strategies should be formulated accordingly, especially for vulnerable groups, including older rural residents and those with lower educational attainment, to prevent cognitive function deterioration in middle-aged and older adults individuals with dual sensory impairment.

History of working conditions and the risk of old-age dependency: a nationwide Swedish register-based study

AIMS

There is substantial evidence that previous working conditions influence post-retirement health, yet little is known about previous working conditions' association with old-age dependency. We examined job strain, hazardous and physical demands across working life, in relation to the risk of entering old-age dependency of care.

METHODS

Individually linked nationwide Swedish registers were used to identify people aged 70+ who were not receiving long-term care (residential care or homecare) at baseline (January 2014). Register information on job titles between the years 1970 and 2010 was linked with a job exposure matrix of working conditions. Random effects growth curve models were used to calculate intra-individual trajectories of working conditions. Cox regression models with age as the timescale (adjusted for living situation, educational attainment, country of birth, and sex) were conducted to estimate hazard ratios for entering old-age dependency during the 24 months of follow-up (n = 931,819).

RESULTS

Having initial adverse working conditions followed by an accumulation throughout working life encompassed the highest risk of entering old-age dependency across the categories (job strain: HR 1.23, 95% CI 1.19-1.27; physical demands: HR 1.36, 95% CI 1.31-1.40, and hazardous work: HR 1.35, 95% CI 1.30-1.40). Initially high physical demands or hazardous work followed by a stable trajectory, or initially low-level physical demand or hazardous work followed by an accumulation throughout working life also encompassed a higher risk of dependency.

CONCLUSIONS

A history of adverse working conditions increased the risk of old-age dependency. Reducing the accumulation of adverse working conditions across the working life may contribute to postponing old-age dependency.

Psychosocial working conditions and cognitive and physical impairment in older age

BACKGROUND

Psychosocial working conditions are associated with cognitive and physical impairments. The aim of this study was to investigate the associations between mid-late life psychosocial working conditions and the combination of physical and cognitive impairment among older adults, and the potential sex differences in these associations.

METHODS

Data were derived from two Swedish nationally representative surveys (n = 839; follow-up: 20-24 years). Multinomial and binary logistic regressions assessed the associations between work stressors (job demand-control model), and a combination of cognitive and physical impairment.

RESULTS

Low control jobs were significantly associated with higher odds of cognitive (OR: 1.41, CI: 1.15-1.72) and physical impairment (OR: 1.23, CI: 1.02-1.47), and cognitive and physical impairment combined (OR: 1.50, CI: 1.19-1.89). Passive jobs (low control, low demand) were associated with higher odds of cognitive impairment (OR: 1.57, CI: 1.12-2.20), and combined cognitive and physical impairment (OR: 1.59, CI: 1.07-2.36). Active jobs (high control, high demand) were associated with lower odds of cognitive impairment (OR: 0.48, CI: 0.29-0.80). Sex-stratified analyses showed stronger associations among men; passive jobs were associated with both cognitive (OR: 2.18, CI: 1.31-3.63) and physical impairment (OR: 1.78, CI: 1.13-2.81), while low strain jobs were associated with less physical impairment (OR: 0.55, CI: 0.33-0.89). No significant associations between work stressors and impairment were found for women.

CONCLUSIONS

These results highlight the importance of psychosocial working conditions for late-life physical and cognitive impairment, especially among men. Jobs characterised by low control and low demands are associated with higher risk for impairments.

Workplace Psychological Distress: A Concept Analysis

BACKGROUND

Workplace psychological distress (WPD) significantly impacts employees' mental and physical well-being. However, WPD has not been well-defined in the literature as a concept. This concept analysis aims to clarify the concept of WPD and promote the use of the term in occupational health nursing research.

METHODS

Strategies introduced by Walker and Avant's conceptual analysis method will be utilized to conceptualize WPD and its impact on employees. A literature search was conducted using Cumulative Index of Nursing and Allied Health Literature (CINAHL), Business Source Complete, and APA PsycArticles. The keyword search included the terms "workplace" AND "employee" AND "psychological distress."

RESULTS

Antecedents of WPD are an increase in job demands, lack of control, low support, and workplace bullying. Defining attributes for WPD are extreme fatigue, role conflict, and time pressures. Consequences of WPD were identified as mental disorders, physical disorders, and loss in productivity. This concept was further illustrated using a model, borderline, and contrary case.

DISCUSSION/CONCLUSION

Identifying signs of WPD is of great importance in caring for employees in the workplace. Occupational health nurses can use information obtained from a workplace assessment to develop policies, implement well-being programs, and provide employee referrals.

Prehospital major incident management: how do training and real-life situations relate? A qualitative study

OBJECTIVE

To explore the relationship between preparations and real-life experiences among prehospital major incident commanders.

DESIGN

An explorative, qualitative design was used.

SETTING

Prehospital major incidents in Sweden. Data were collected between December 2019 and August 2020.

PARTICIPANTS

Prehospital major incident commanders (n=15) with real-life experiences from major events, such as fires, bus accidents, a bridge collapse and terrorist attacks, were included. All but one had participated in 2-day training focusing on the prehospital management of major incidents. In addition, about half of the participants had participated in simulation exercises, academic courses and other training in the management of major incidents.

METHODS

Data from two-session individual interviews were analysed using inductive thematic analysis.

RESULTS

The conformity between real-life major incidents and preparations was good regarding prehospital major incident commanders' knowledge of the operational procedures applied in major incidents. However, the preparations did not allow for the complexities and endurance strategies required in real-life incidents. Personal preparations, such as mental preparedness or stress management, were not sufficiently covered in the preparations. To some extent, professional experience (such as training) could compensate for the lack of formal preparations.

CONCLUSIONS

This study identified perceived gaps between preparations and real-life experiences of being a prehospital major incident commander. To minimise the gaps between demands and expectations on perceived control and to better prepare individuals for being prehospital major incident commanders, the training and other preparations should reflect complexities of real-life incidents. Preparations should develop both technical skills required, such as principles and methodology used, and personal preparedness. Personal preparations should include improving one's mental preparedness, self-knowledge and professional self-confidence required to successfully act as a prehospital incident commander. Since little is known about what pedagogical methods that should be used to enhance this, further research is needed.

Combined relationship of physical inactivity and sedentary behaviour with the prevalence of noncommunicable chronic diseases: data from 52,675 Brazilian adults and elderly

This paper aims to verify the association between the combined relationship of physical inactivity and sedentary behaviour (SB) at leisure-time and the prevalence of noncommunicable chronic diseases (NCDs) in Brazilian adults and elderly. This is a cross-sectional study, derived from the VIGITEL system, with individuals ≥18 years old (n = 52,675). The presence of NCDs (diabetes, hypertension, and obesity) and the independent variables were defined by self-report. Binary logistic regression was used. While adults with the presence of, at least, one risky behaviour had a higher odds to have obesity (OR _{active + high SB}: 1.25; 95%CI: 1.01;1.54; OR _{inactive + low SB}: 1.47; 95%CI: 1.25;1.73; OR _{inactive + high SB}: 1.77; 95%CI: 1.47;2.12), the elderly had an increased risk for this outcome only when classified as inactive (OR _{inactive + low SB}: 1.43; 95%CI: 1.17;1.75; OR _{inactive + high SB}: 1.87; 95%CI: 1.47;2.38). Inactive adults with low SB were more likely to have diabetes (OR _{inactive + low SB}: 1.31; 95%CI: 1.00;1.71) and hypertension (OR _{inactive + low SB}: 1.26; 95%CI: 1.08;1.46), while physical inactivity was again more strongly associated with these outcomes in the elderly, for diabetes (OR _{inactive + low SB}: 1.23; 95%CI: 1.02;1.48; OR _{inactive + high SB}: 1.75; 95%CI: 1.39;2.19), and hypertension (OR _{inactive + low SB}: 1.22; 95%CI: 1.05;1.41; OR _{inactive + high SB}: 1.60; 95%CI: 1.33;1.94) Both leisure-time behaviours carry a high risk of the prevalence of different NCDs, however, physical inactivity, isolated or combined, showed a greater association with the evaluated outcomes.Highlights This cross-national survey included representative sample of people ≥18 years old.Adults with at least one evident risky behavior had a higher chance of obesity.Inactive adults with low sedentary behavior had higher chances for diabetes and hypertension.Physical inactivity was more strongly associated with all diseases in the elderly.

Prevention of dementia in an ageing world: Evidence and biological rationale

As the population ages, the number of people with dementia is expected to increase in the coming decades, with consequences at the societal and individual levels. In this narrative review, we provide a summary of the scientific evidence concerning dementia prevention, with a focus on the following three strategies: 1) Targeting the body to protect the brain, including prevention and treatment of cardiovascular morbidity; 2) Compensatory interventions to counteract brain ageing, including education and life-long engagement in cognitively and socially stimulating activities; and 3) Lifespan health promotion, such as a physically active lifestyle, smoking cessation, and a healthy and balanced diet. Next, we consider the biological mechanisms by which these strategies may act by taking into account the main pathways implicated in the development and progression of dementia: neurodegeneration, brain resilience, vascular damage, neuroinflammation, and oxidative stress. Based on the current evidence, and in line with the declining trends of dementia incidence in high-income countries, we conclude that timely multidomain preventive actions are promising strategies to reduce the dementia epidemic worldwide. There is still a considerable gap between the epidemiological evidence and its underlying biological mechanisms. Filling this gap will be crucial to move forward in dementia prevention worldwide.

Psychosocial job strain and polypharmacy: a national cohort study

Objectives Psychosocial job strain has been associated with a range of adverse health outcomes. The aim of this study was to examine the association between psychosocial job strain and prospective risk of polypharmacy (the prescription of ≥5 medications) and to evaluate whether coping strategies can modify this risk. Methods Cohort study of 9703 working adults [mean age 47.5 (SD 10.8) years; 54% female] who participated in the Swedish Longitudinal Occupational Survey of Health (SLOSH) at baseline in 2006 or 2008. Psychosocial job strain was represented by job demands and control, and measured by the Swedish version of the demand-control questionnaire. The outcome was incidence of polypharmacy over an eight-year follow-up period. Information on dispensed drugs were extracted from the Swedish Prescribed Drug Register. Logistic regression was used to estimate the association of job strain status with polypharmacy, adjusted for a range of confounders. Results During the follow-up, 1409 people developed polypharmacy (incident rate: 20.6/1000 person-years). In comparison to workers with low-strain jobs (high control/low demands), those with high-strain jobs (low control/high demands) had a significantly higher risk of incident polypharmacy (OR 1.40, 95% CI 1.04-1.89). The impact of high-strain jobs on developing polypharmacy remained among those with covert coping strategies (ie, directed inwards or towards others) but not among those with open coping strategies (ie, primarily directed toward the stressor). Conclusions Workers in high-strain jobs may be at an increased risk of polypharmacy. Open coping strategies may reduce the negative impact of psychosocial job strain on risk of polypharmacy.